From what I could tell he had a real problem with being truthful. Unfortunately most of the bodybuilders from this era had the same problem. When given the choice of taking big $ for supplement promotion, vs admitting that they were all doing copious amounts of steroids to get that look, they always took the former. Not very surprising, but they sure ripped off the dreams(and $) from a lot of young guys who just needed to take their supp's and train hard, to get to the top.
What impresses me about Franco is he didn't seem to suffer from any obvious side effects from steroid usage. No balding, great skin. I do a mild cycle and my hair thins at the front, and I break out in zits, hair sprouts all over my back.
If he was the "Vinnie" character from Muscle, I think he was the guy who had to squat whist wearing diapers, outherwise he shat himself.
From memory Fussel seemed a bit dismissive of Vinnie's potential in the bodybuiling world. Its true that he wasn't greatly successful record wise, but he sure built one hell of an impressive physique, that got him lots of magazine coverage and publicity.